Singh Sandhu, Gurbeer, et al. “Effect of Supplementation of Synthetic Serum Substitutes Versus Fetal Bovine Serum in Maturation Media on In Vitro Maturation of Oocytes from Sahiwal Cows ”. The Indian Journal of Animal Reproduction, vol. 46, no. 4, Feb. 2026, pp. 48-53, https://doi.org/10.48165/ijar.2025.46.04.8.